/* ============================================================
   BASE — reset, typography, body, app shell, scanline overlay
   ============================================================ */

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html, body {
  height: 100%;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Space Grotesk', system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
  transition: background-color 0.35s ease, color 0.35s ease;
}

a {
  color: inherit;
  text-decoration: none;
}

::selection {
  background: var(--accent-soft);
  color: var(--text);
}

.mono {
  font-family: 'JetBrains Mono', ui-monospace, monospace;
}

/* Dark-theme scanline overlay */
:root[data-theme="nord"] body::before,
:root[data-theme="dracula"] body::before,
:root[data-theme="monokai"] body::before,
:root[data-theme="midnight"] body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1;
  background: repeating-linear-gradient(
    180deg,
    rgba(255, 255, 255, 0.01) 0px,
    rgba(255, 255, 255, 0.01) 1px,
    transparent 1px,
    transparent 3px
  );
}

/* App grid — sidebar + main */
.app {
  display: grid;
  grid-template-columns: 230px 1fr;
  min-height: 100vh;
}

@media (max-width: 900px) {
  .app {
    grid-template-columns: minmax(0, 1fr);
  }

  /* Sidebar becomes a sticky horizontal top nav bar */
  .app .sidebar {
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 8px;
    height: auto;
    padding: 8px 12px;
    position: sticky;
    top: 0;
    z-index: 30;
    border-right: none;
    border-bottom: 1px solid var(--border);
    overflow-x: auto;
    overflow-y: hidden;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }

  .app .sidebar::-webkit-scrollbar {
    display: none;
  }

  .app .sidebar .brand {
    padding: 0;
    flex-shrink: 0;
  }

  .app .sidebar .brand-mark {
    width: 28px;
    height: 28px;
  }

  .app .sidebar .brand-name,
  .app .sidebar .brand-sub,
  .app .sidebar .sidebar-footer {
    display: none;
  }

  .app .sidebar .nav {
    flex-direction: row;
    align-items: center;
    gap: 4px;
    flex-shrink: 0;
  }

  .app .sidebar .nav-label {
    display: none;
  }

  .app .sidebar .nav-item {
    white-space: nowrap;
    padding: 6px 10px;
    font-size: 12px;
  }

  .app .sidebar .nav-item svg {
    display: none;
  }

  .app .topbar {
    position: static;
    padding: 12px 16px;
  }

  .app .content {
    padding: 18px 16px 32px;
  }
}

@media (max-width: 520px) {
  .app .topbar .clock {
    display: none;
  }

  .app .page-title {
    font-size: 17px;
  }
}

/* Main content area */
.main {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  min-width: 0;
  position: relative;
  z-index: 2;
}

.content {
  padding: 26px 28px 40px;
  display: flex;
  flex-direction: column;
  gap: 18px;
  max-width: 1400px;
  width: 100%;
  min-width: 0;
  margin: 0 auto;
}